President Barack Obama reminisced about the conspiracy theories surrounding his birth certificate during a speech at the National Action Network convention in New York City Friday afternoon. Obama referenced the doubts about his citizenship that led him to release a copy of his birth certificate in 2011, while criticizing voter I.D. laws that require people to present documentation like passports and birth certificates to vote.

“Just to be clear, I know where my birth certificate is,” he added.

Obama then began to laugh.

“You remember that? That was crazy,” said Obama. “Haven’t thought about that in a while.”